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      <a id="massign"></a>
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      <a id="IndexMassign" class="indexterm"></a>
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        <h2>
          <span class="refentrytitle">massign</span>
        </h2>
        <p>massign — 
      Assigns a MIDI channel number to a Csound instrument.
          </p>
      </div>
      <div class="refsect1">
        <a id="idp122696672"></a>
        <h2>Description</h2>
        <p>
	    Assigns a MIDI channel number to a Csound instrument.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp122772064"></a>
        <h2>Syntax</h2>
        <pre class="synopsis"><span class="command"><strong>massign</strong></span> ichnl, insnum[, ireset]</pre>
        <pre class="synopsis"><span class="command"><strong>massign</strong></span> ichnl, "insname"[, ireset]</pre>
      </div>
      <div class="refsect1">
        <a id="idp122775424"></a>
        <h2>Initialization</h2>
        <p>
      <span class="emphasis"><em>ichnl</em></span> -- MIDI channel number (1-16).
    </p>
        <p>
      <span class="emphasis"><em>insnum</em></span> -- Csound orchestra instrument number.
      If zero or negative, the channel is muted (i.e. it doesn't trigger a csound instrument, though information will still be received by opcodes like <a class="link" href="midiin.html" title="midiin"><em class="citetitle">midiin</em></a>).
    </p>
        <p>
      <span class="emphasis"><em><span class="quote">“<span class="quote">insname</span>”</span></em></span> -- A string (in double-quotes) representing a named instrument.
    </p>
        <p>
      <span class="emphasis"><em>ireset</em></span> -- If non-zero resets the
    controllers; default is to reset.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp122780928"></a>
        <h2>Performance</h2>
        <p>
      Assigns a MIDI channel number to a Csound instrument. Also useful to make sure a certain instrument (if its number is from 1 to 16) will not be triggered by midi noteon messages (if using something <a class="link" href="midiin.html" title="midiin"><em class="citetitle">midiin</em></a> to interpret midi information). In this case set <span class="emphasis"><em>insnum</em></span> to 0 or a negative number.
    </p>
        <p>
      If <span class="emphasis"><em>ichan</em></span> is set to 0, the value of <span class="emphasis"><em>insnum</em></span> is used for all channels. This way you can route all MIDI channels to a single Csound instrument. You can also disable triggering of instruments from MIDI note events from all channels with the following line:
    </p>
        <pre class="programlisting">massign 0,0</pre>
        <p>
      This can be useful if you are doing all MIDI evaluation within Csound with an always on instrument(e.g. using <a class="link" href="midiin.html" title="midiin"><em class="citetitle">midiin</em></a> and <a class="link" href="turnon.html" title="turnon"><em class="citetitle">turnon</em></a>) to avoid doubling the instrument when a note is played.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp122788480"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the massign opcode. It uses the file <a class="ulink" href="examples/massign.csd" target="_top"><em class="citetitle">massign.csd</em></a>.
      </p>
        <div class="example">
          <a id="idp122790336"></a>
          <p class="title">
            <strong>Example 473. Example of the massign opcode.</strong>
          </p>
          <div class="example-contents">
            <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac  -+rtmidi=virtual -M0    <span class="comment">;;;realtime audio out and realtime midi in </span>
<span class="comment">;-iadc    ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">;-o massign.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>

<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span>  <span class="op">=</span> 1

giengine <span class="opc">fluidEngine</span>
<span class="comment">; soundfont path to manual/examples</span>
isfnum	 <span class="opc">fluidLoad</span> "19Trumpet.sf2", giengine, 1
	 <span class="opc">fluidProgramSelect</span> giengine, 1, isfnum, 0, 56

<span class="ohdr">massign</span> 0,0	<span class="comment">;disable triggering of all instruments on all channels, but</span>
<span class="ohdr">massign</span> 12,10	<span class="comment">;assign instr. 10 to midi channel 12</span>
<span class="ohdr">massign</span> 3,30	<span class="comment">;assign instr. 30 to midi channel 3</span>

<span class="oblock">instr</span> 10 <span class="comment">; soundfont only on midi channel 12</span>

      <span class="opc">mididefault</span>   60, p3
      <span class="opc">midinoteonkey</span> p4, p5	<span class="comment">; in midi notes</span>
ikey  <span class="opc">init</span> p4
ivel  <span class="opc">init</span> p5
      <span class="opc">fluidNote</span> giengine, 1, ikey, ivel
<span class="oblock">endin</span>

<span class="oblock">instr</span> 30 <span class="comment">; FM-oscilator only on midi channel 3</span>

      <span class="opc">mididefault</span>   60, p3
      <span class="opc">midinoteoncps</span> p4, p5	<span class="comment">; in Hertz</span>
icps  <span class="opc">init</span> p4
iamp  <span class="opc">init</span> p5
iamp  <span class="op">=</span> iamp<span class="op">/</span>127
kenv  <span class="opc">madsr</span>  0.5, 0, 1, 0.5
asig  <span class="opc">foscil</span> iamp<span class="op">*</span>kenv, icps, 1, 1.414, 2, 1
      <span class="opc">outs</span> asig, asig 
<span class="oblock">endin</span> 

<span class="oblock">instr</span> 99 <span class="comment">; output sound from fluidengine</span>

imvol <span class="opc">init</span> 7
aL, aR <span class="opc">fluidOut</span> giengine
      <span class="opc">outs</span> aL<span class="op">*</span>imvol, aR<span class="op">*</span>imvol
<span class="oblock">endin</span>
<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>
<span class="comment">; sine</span>
<span class="stamnt">f</span> 1 0 16384 10 1

<span class="stamnt">i</span> 10 0 2 60 100  <span class="comment">;one note on the trumpet in midi and...</span>
<span class="stamnt">i</span> 30 2 2 220 80  <span class="comment">;one FM note in Hz</span>
<span class="stamnt">i</span> 99 0 60	 <span class="comment">;stay active for 60 sec.</span>
<span class="stamnt">e</span>

<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
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        <p><br class="example-break" />
    </p>
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      <div class="refsect1">
        <a id="idp122794624"></a>
        <h2>See Also</h2>
        <p>
      <a class="link" href="ctrlinit.html" title="ctrlinit"><em class="citetitle">ctrlinit</em></a>
    </p>
      </div>
      <div class="refsect1">
        <a id="idp122796672"></a>
        <h2>Credits</h2>
        <p>
      </p>
        <table border="0" summary="Simple list" class="simplelist">
          <tr>
            <td>Author: Barry L. Vercoe - Mike Berry</td>
          </tr>
          <tr>
            <td>MIT, Cambridge, Mass.</td>
          </tr>
        </table>
        <p>
    </p>
        <p>New in Csound version 3.47</p>
        <p><span class="emphasis"><em>ireset</em></span> parameter new in Csound5</p>
        <p>Thanks goes to Rasmus Ekman for pointing out the correct MIDI channel range.</p>
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